1 //===-- ValueObjectConstResultImpl.cpp ---------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "lldb/Core/ValueObjectConstResultImpl.h" 11 12 #include "lldb/Core/ValueObjectChild.h" 13 #include "lldb/Core/ValueObjectConstResult.h" 14 #include "lldb/Core/ValueObjectConstResultChild.h" 15 #include "lldb/Core/ValueObjectMemory.h" 16 #include "lldb/Core/DataExtractor.h" 17 #include "lldb/Core/Module.h" 18 #include "lldb/Core/ValueObjectList.h" 19 20 #include "lldb/Symbol/ClangASTType.h" 21 #include "lldb/Symbol/ObjectFile.h" 22 #include "lldb/Symbol/SymbolContext.h" 23 #include "lldb/Symbol/Type.h" 24 #include "lldb/Symbol/Variable.h" 25 26 #include "lldb/Target/ExecutionContext.h" 27 #include "lldb/Target/Process.h" 28 #include "lldb/Target/Target.h" 29 30 using namespace lldb; 31 using namespace lldb_private; 32 33 ValueObjectConstResultImpl::ValueObjectConstResultImpl (ValueObject* valobj, 34 lldb::addr_t live_address) : 35 m_impl_backend(valobj), 36 m_live_address(live_address), 37 m_live_address_type(eAddressTypeLoad), 38 m_load_addr_backend(), 39 m_address_of_backend() 40 { 41 } 42 43 lldb::ValueObjectSP 44 ValueObjectConstResultImpl::Dereference (Error &error) 45 { 46 if (m_impl_backend == NULL) 47 return lldb::ValueObjectSP(); 48 49 return m_impl_backend->ValueObject::Dereference(error); 50 } 51 52 ValueObject * 53 ValueObjectConstResultImpl::CreateChildAtIndex (size_t idx, bool synthetic_array_member, int32_t synthetic_index) 54 { 55 if (m_impl_backend == NULL) 56 return NULL; 57 58 m_impl_backend->UpdateValueIfNeeded(false); 59 60 ValueObjectConstResultChild *valobj = NULL; 61 62 bool omit_empty_base_classes = true; 63 bool ignore_array_bounds = synthetic_array_member; 64 std::string child_name_str; 65 uint32_t child_byte_size = 0; 66 int32_t child_byte_offset = 0; 67 uint32_t child_bitfield_bit_size = 0; 68 uint32_t child_bitfield_bit_offset = 0; 69 bool child_is_base_class = false; 70 bool child_is_deref_of_parent = false; 71 72 const bool transparent_pointers = synthetic_array_member == false; 73 ClangASTType clang_type = m_impl_backend->GetClangType(); 74 ClangASTType child_clang_type; 75 76 ExecutionContext exe_ctx (m_impl_backend->GetExecutionContextRef()); 77 78 child_clang_type = clang_type.GetChildClangTypeAtIndex (&exe_ctx, 79 idx, 80 transparent_pointers, 81 omit_empty_base_classes, 82 ignore_array_bounds, 83 child_name_str, 84 child_byte_size, 85 child_byte_offset, 86 child_bitfield_bit_size, 87 child_bitfield_bit_offset, 88 child_is_base_class, 89 child_is_deref_of_parent, 90 m_impl_backend); 91 if (child_clang_type && child_byte_size) 92 { 93 if (synthetic_index) 94 child_byte_offset += child_byte_size * synthetic_index; 95 96 ConstString child_name; 97 if (!child_name_str.empty()) 98 child_name.SetCString (child_name_str.c_str()); 99 100 valobj = new ValueObjectConstResultChild (*m_impl_backend, 101 child_clang_type, 102 child_name, 103 child_byte_size, 104 child_byte_offset, 105 child_bitfield_bit_size, 106 child_bitfield_bit_offset, 107 child_is_base_class, 108 child_is_deref_of_parent); 109 if (m_live_address != LLDB_INVALID_ADDRESS) 110 valobj->m_impl.SetLiveAddress(m_live_address+child_byte_offset); 111 } 112 113 return valobj; 114 } 115 116 lldb::ValueObjectSP 117 ValueObjectConstResultImpl::GetSyntheticChildAtOffset (uint32_t offset, const ClangASTType& type, bool can_create) 118 { 119 if (m_impl_backend == NULL) 120 return lldb::ValueObjectSP(); 121 122 return m_impl_backend->ValueObject::GetSyntheticChildAtOffset(offset, type, can_create); 123 } 124 125 lldb::ValueObjectSP 126 ValueObjectConstResultImpl::AddressOf (Error &error) 127 { 128 if (m_address_of_backend.get() != NULL) 129 return m_address_of_backend; 130 131 if (m_impl_backend == NULL) 132 return lldb::ValueObjectSP(); 133 if (m_live_address != LLDB_INVALID_ADDRESS) 134 { 135 ClangASTType clang_type(m_impl_backend->GetClangType()); 136 137 lldb::DataBufferSP buffer(new lldb_private::DataBufferHeap(&m_live_address,sizeof(lldb::addr_t))); 138 139 std::string new_name("&"); 140 new_name.append(m_impl_backend->GetName().AsCString("")); 141 ExecutionContext exe_ctx (m_impl_backend->GetExecutionContextRef()); 142 m_address_of_backend = ValueObjectConstResult::Create (exe_ctx.GetBestExecutionContextScope(), 143 clang_type.GetPointerType(), 144 ConstString(new_name.c_str()), 145 buffer, 146 lldb::endian::InlHostByteOrder(), 147 exe_ctx.GetAddressByteSize()); 148 149 m_address_of_backend->GetValue().SetValueType(Value::eValueTypeScalar); 150 m_address_of_backend->GetValue().GetScalar() = m_live_address; 151 152 return m_address_of_backend; 153 } 154 else 155 return m_impl_backend->ValueObject::AddressOf(error); 156 } 157 158 lldb::addr_t 159 ValueObjectConstResultImpl::GetAddressOf (bool scalar_is_load_address, 160 AddressType *address_type) 161 { 162 163 if (m_impl_backend == NULL) 164 return 0; 165 166 if (m_live_address == LLDB_INVALID_ADDRESS) 167 { 168 return m_impl_backend->ValueObject::GetAddressOf (scalar_is_load_address, 169 address_type); 170 } 171 172 if (address_type) 173 *address_type = m_live_address_type; 174 175 return m_live_address; 176 } 177 178 size_t 179 ValueObjectConstResultImpl::GetPointeeData (DataExtractor& data, 180 uint32_t item_idx, 181 uint32_t item_count) 182 { 183 if (m_impl_backend == NULL) 184 return 0; 185 return m_impl_backend->ValueObject::GetPointeeData(data, item_idx, item_count); 186 } 187